Hydraulic motor.



L. SWENINGSON & w. H. 110011111111.

HYDRAULIC MOTOR.

APPLICATION FILED SEPT. 14. 1914.

Patented Jan. 4, 1916.

COLUMBIA PLANOCIRAPH co., WASHINGTON, D. c.

' Figure 1' isjag vertical sectional view on line FFTLQE;

LOUIS SWENINGS ON AND'WILLIAM I-I. WCODWARD, CLEVELAND, OHIO.

'HYnRAu Io Moron,

meager.

Z '0 all whom it may concern: 7 v

Be it known that we, LoUIs SWnN'INesoN and WILLIAM H. WooD wi-im),citizens of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and useful Improvements in Hydraulic Motors, of which the following is a specification.

Our invention relates to hydraulic motors, and includes animproved valvemechanism, and While we have shown the valve mechanism in use in a motorof the oscillating type the invention is not limited to its use in thisparticular type of motor, as itis adaptable to othertypes of motors. i

The object of the invention is to provide improved means ofcontrollingthe valve arrangement whereby the water pressure will beemployed to alternately reverse the'power piston at the end of eachefi'ectivestroke of said piston and without the use of springs. v i

A further object of our invention is to provide a springless motor Jwith valve mechanism so constructed as to insure the "shifting of allparts of the .valve without finding a balancing position, thereby insuring perfect operation. of motor when in use in unskilledhands. '1 YjBeferring tothe accompanying drawings:

l l-of Fig. 2. Fig. 2 is aplan view show.-v ing; all parts assembledforoperation, with the :cover removed. F ig: 3 is a side elevation of ava'lvemeinber removed from its sup port, showing flanges on top andbottom Which serve as. bearings for. said member. Fig. 4 1s a verticalsectional view of the valve taken on line 4'/l.of Fig. 5shovvingflange-bearings on all three parts ofvthe valve. Fig. 5 is a broken'horizontalzsec'tion of the valve taken on 11116, 55 of Fig: 4:

showing valves in a cut'ofi position. Fig.

6"is a. similar sectional view showing the eenter member 9 of the. valvein position for-- reversing thG'VEIlVG section 7 F igi 7 is asimilarsectional view and shows all memreversing' the piston oroscillator 4.;

In the construction or" the motor we em-v A casting 1 forms thetop or'coverfor the casing 8 and is provided with inlet passages.

15and 15 and also a boss at the centerform- Specification of LettersPatent. I

Patented an. a, rare. 7

Application filed September 14, 1914.; Serial Hoi 851,566;

ing anfup'per bearing for the piston shaft 3. The bottcm of casing 8 isclo'sedby a casting 2 which conta ns passages 16 and 16 for exhaustingwaste fluid from motor, and has a central boss as in casting 1 andcorres'ponding with same, thereby forming the opposite .or lower bearingfor the piston shaft S, said boss on casting 2 being ofsufficient'length to form means for the usual packing nut 18 and locknut 17. Theshaft 3' may beconnected to anyl'desired machine to operatethe latter. The cylinder 8 also contains a valve casing 6 which extendsvertically from top 1 to 'bottom'2, and extends horizontally andradially from cylinder 8 to the hub of the piston shaft 3, packing'19-being interposechand the valve cats ing is fastened tocasing 8 byscrews 10, and

to top 1, and bottom 2, by screw 11.

1 The casing 6*c0ntains the three valve members 7, 7 andg9,'lwhich'oscillate as here inafter' described, the member'9 being confined between the side members 7, 7

r The motor cylinder is divided by the valve casing 6, shafthub 3, andits pistonl, into two'compartments26 and 27,'which alter nately-receiveand discharge the motive fluid according to the operation of the valvecontained in casing 6; The pistoniorfwing 4, hub and shaft '8 preferablycomprise one Casting the ub ngof larger diameter bet tween'the top andbottom plates 1 and 2, so as to prevent the'shaft 3 from working up or 1down and causing unnecessary wear on the leather piston packing 13 and13.

The piston Lon shaft 3 moves about its pivotal point, conforming withthe interior Walls of cylinder 8, and moving toward opposite sides ofcasing 6; alternately, the motive fluid being directed alternately toits opposite sides by lthe 'action of the valve members :7 7 and 92contained in thecasing 6-. v The piston 4 is provided With the necessarycup packing13 and-18 on its opposite sides,said packingbe'ingfirmly heldin place by plates 5 and bolted securely to said pis- 1 tonby bolts 14;Plates '5 are provided bers of the valve intheir final'positions for 1with (extensions or arms 5 1 and 5 respectively which enteropenings23'and 23 in the casing 6 at the end of each eflective stroke ofthe piston 1, and move the valves to cutofl' edge, as indicated inFig.2. 1 Each member I 7, 7 has port 24 and 24, and the member 9 hasopposite'side recesses 25 and 25'.

In operation, the motivefluid enters motornthrough openings and 15' inlid on 1 cover 1, and thence through communicating inlet chamber 20 incasing 6, and thence through the valve between inner ends of members 9and 7, thence over inner end of section 7 of valve and through opening28 in casing 6, and into compartment 27 driving piston .4 around toopposite side ofcasing 6, and exhausting used fluid from opposite sideof piston 4, or compartment 26, through opening 23 in casing 6, thencethrough communicating port 2% in section Tinto communicating port 25 ofeasing 9 thence into communicating exhaust chamber 21 between the outerends of valve 7 and 7, and out of motor through exhaust ports 16 and 16contained in lower casting 2.

In the position shown inFig. 2, the piston 4 has almost completed itseffective stroke, and arm 5 has entered casing 6 through its openin 23,and come in contact with valve section 7, thereby moving said valvesection 7, and valve section 9 around to position shown in Fig. 5thereby placing the inner end or tongue of section 9 between inletchamber 20 in casing 6, and opening 23 in said casing 6 thus cuttingmotive pressure out of the compartment 27.

It will be noted that the inlet chamber 20 always contains motivepressure, therefore when valve members 7 and 9 are in cut off positionas shown in Fig. 5 the motive pressure from chamber 20 will enter smallchamber 22 between innerends of members 7 and 9 and thereby oscillatemember 9 to the position shown in Fig. 6, and being still confined inchamber 20 of casing 6. and chamber 22, between members 7 and 9 of thevalve, and having moved member 9 to the limit of its stroke, will inturn move member 7 back to its original position as shown in Fig. 7, and

' thereby reverse the stroke of the piston 4.

It will also be noted that as arm 5 initially moves valve sections 7 and9 to the out ofi position shown in Fig. 5, the valve members 7 are soconstructed so as to maintain an open exhaust from compartment 26through opening 28, into exhaust chamber 21 through port 24 in valvemember 7, and communieating recess 25 in valve member 9, so while thepressure is cut out of compartment 27 as in Fig. 5 the exhaust forcompartment 26 is still open. However, when the oscillating member 9 hasmoved to the position shown in Fig. 6 and memberv 7 has moved to theposition as shown in Fig. 7, the exhaust from compartment 27 when piston4 was traveling to a position opposite to the position shown in Fig. 2.would be effected through opening 23 in casing 6, port 2% in valvemember 7, communicating port 25 in valve member 9, thence into exhaustchamber 21 and out of the motor through exhaust ports 16 and 16' of thecasting 2.

It will be further noted that the exhaust opens ahead of the inlet priorto the return of the piston on each effective stroke. As member 9 of thevalves has completed its movement (see Fig. 6) thus opening exhaustports 24' and 25 into exhaust chamber 21,, the inlet to compartment 26will not be ef fected until valve member 7 has reached the positionshown in Fig. 7, when it will pass into said compartment 26 throughopening 23 in casing 6.

It will further be noted by the foregoing description and accompanyingdrawings that the inner ends of the valve members 7, 7 and 9 alternatelyserve as pistons and abutments for each other, chamber 22 or 22 actingas the cylinder for said members, For example in Fig. 5, member 7 actsas the abutment, while member 9 moves as a piston to the position shownin Fig. 6, when it in turn will become an abutment for returning valvemember 7 to the position shown in Fig. 7, chamber 22 acting as thecylinder.

While the valve arrangement disclosed in the foregoing description andaccompanying drawings is of an oscillating nature, said valvearrangement can be used with piston valves without departing from thespirit of the invention, and we do not wish to limit ourselves to theuse of this valve to any particular type.

Another feature is that the initial movement of valves at either end ofpiston stroke caused by the arms on the piston coming in contact withthe members of said valve, is accomplished by having the pressuresurfaces of the valve members much smaller than the pressure surface ofmain piston.

That we claim as new is:

1. In a hydraulic motor, a valve mechanism comprising a casing havinginlet and outlet chambers and side openings into the motor chambers, anda valve in said casing consisting of two oscillating side members and anoscillating member therebetween, the side members havingportscommunicating respectively with said openings, and the intermediatemember having recesses adapted to connect said ports and the outletchamber, and the said members being movable to alternately connect theinlet chamber and said openings, and means to oscillate said members.

2. A. reversing valve for hydraulic motors,

connect said ports alternately with the said outlet passage, and alsohaving a projecting tongue movable across the'inlet passage.

3. A reversing valve for hydraulic motors,

comprising a valve casing having inlet and outlet chambers, and openingsat opposite sides communicating with separate motor chambersya pair ofsegmental oscillating valve members located at opposite sides of saidcasing and extending across said open ings respectively, one end of eachmember being movable to connect said inlet chamber and said openingsrespectively, and each of said members having an outlet portcommunicating with one of said openings, and a middle oscillatingcontrolling member located between said members and having a recess ateach side adapted to connect one of said ports and the outlet chamber,and also having a tongue projecting between the said ends of the saidside members and movable across the inlet chamber, the tongue beingspaced from said ends to form inlet pressure chambers.

4. In a hydraulic motor, the combination of a cylinder, an oscillatingpiston therein having projecting-arms at opposite sides, a valve casingextending partly across the cylinder and having openings at oppositesides and inlet and outlet passages, a pair ofoscillating valve membersin the casing, extending respectively across said openings and adaptedto alternately connect same with the inlet passage, and having outletports communicating with said openings, and an intermediate oscillatingvalve mem ber located between the said members and controlling saidports and having a part exposed to pressure at the inlet passage andmovable across the same, the said members being located inv position tobe alternately struck and moved by said arms entering said openings.

In testimony whereof, we affix our signatures in presence of twowitnesses.

LOUIS SWENINGSON. WILLIAM H. WOODWARD. Witnesses:

JOHN A. BOMMHARDT. LoUIs A. Moses.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

